解析properties文件通用 java工具類

n24d 9年前發布 | 5K 次閱讀 Java
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
public class PropertiesUtil {
/**


方法: getProperties <br>
描述: 更具key獲取value <br>
作者: 宋學軍 sxjworld@126.com<br>
時間: 2013-12-6 下午3:13:52 
@param key
@return
*/
public static String getProperties(String key) {
Properties prop = new Properties();
InputStream url = PropertiesUtil.class.getResourceAsStream("/conf/deploy.properties");
FileInputStream in = null;
try {
prop.load(url);
} catch (FileNotFoundException e1) {
e1.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
if(in != null){
try {
in.close();
in= null;
} catch (IOException e) {
e.printStackTrace();
}
}
}

return (String)prop.get(key);
}
public static String getProperties(String path,String key) {
Properties prop = new Properties();
InputStream url = null;
FileInputStream in = null;
try {
url = new FileInputStream(path);
} catch (FileNotFoundException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
try {
prop.load(url);
} catch (FileNotFoundException e1) {
e1.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
if(in != null){
try {
in.close();
in= null;
} catch (IOException e) {
e.printStackTrace();
}
}
}
return (String)prop.get(key);
}
public static void addProperties(String key,String value){
InputStream url = PropertiesUtil.class.getResourceAsStream("/conf/deploy.properties");
Properties prop = new Properties();
try {
prop.load(url);
} catch (IOException e) {
e.printStackTrace();
}
/*Map toSaveMap = new HashMap();
Set keys = prop.keySet();
for (Iterator itr = keys.iterator(); itr.hasNext();) {
String oldKey = (String) itr.next();
Object oldValue = prop.get(oldKey);
toSaveMap.put(oldKey, oldValue);
}
toSaveMap.put(key,value);

prop.putAll(toSaveMap);
System.out.println(toSaveMap.toString());*/
prop.put(key, value);

    try  
    {  
        OutputStream outputStream = new FileOutputStream(new File(PropertiesUtil.class.getResource("/conf/deploy.properties").getFile()));  
        prop.store(outputStream, null);
        outputStream.flush();
        outputStream.close();  
        System.out.println("添加成功");
    }  
    catch (IOException e)  
    {  
        e.printStackTrace();  
    }  

}
/**


方法: addProperties <br>
描述: 設置key，value <br>
作者: 宋學軍 sxjworld@126.com<br>
時間: 2013-12-6 下午3:15:03
@param key
@param value
@throws Exception 
*/
public static void addProperties(String path,String key,String value){
InputStream url = null;
try {
url = new FileInputStream(path);
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Properties prop = new Properties();
try {
prop.load(url);
} catch (IOException e) {
e.printStackTrace();
}

Map toSaveMap = new HashMap();
Set keys = prop.keySet();
for (Iterator itr = keys.iterator(); itr.hasNext();) {
String oldKey = (String) itr.next();
Object oldValue = prop.get(oldKey);
toSaveMap.put(oldKey, oldValue);
}
toSaveMap.put(key,value);

prop.putAll(toSaveMap);
System.out.println(toSaveMap.toString());

    try  
    {  
        OutputStream outputStream = new FileOutputStream(new File(path));  
        prop.store(outputStream, null);
        outputStream.flush();
        outputStream.close();  
        System.out.println("添加成功");
    }  
    catch (IOException e)  
    {  
        e.printStackTrace();  
    }  

}
/**


方法: updateProperties <br>
描述: 修改 <br>
作者: 宋學軍 sxjworld@126.com<br>
時間: 2013-12-6 下午3:28:29
@param key
@param value
*/
public static void updateProperties(String key,String value) {
InputStream url = PropertiesUtil.class.getResourceAsStream("/conf/deploy.properties");
Properties prop = new Properties();
try {
prop.load(url);
} catch (IOException e) {
e.printStackTrace();
}

/*Map toSaveMap = new HashMap();
Set keys = prop.keySet();
for (Iterator itr = keys.iterator(); itr.hasNext();) {
String oldKey = (String) itr.next();
Object oldValue = prop.get(oldKey);
toSaveMap.put(oldKey, oldValue);
}
toSaveMap.put(key,value);

prop.putAll(toSaveMap);
System.out.println(toSaveMap.toString());*/
prop.put(key, value);

    try  
    {  
        OutputStream outputStream = new FileOutputStream(new File(PropertiesUtil.class.getResource("/conf/deploy.properties").getFile()));  
        prop.store(outputStream, null);
        outputStream.flush();
        outputStream.close();  
        System.out.println("修改成功");
    }  
    catch (IOException e)  
    {  
        e.printStackTrace();  
    }  

}
public static void updateProperties(String path,String key,String value) {
InputStream url = null;
try {
url = new FileInputStream(path);
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Properties prop = new Properties();
try {
prop.load(url);
} catch (IOException e) {
e.printStackTrace();
}
/*Map toSaveMap = new HashMap();
Set keys = prop.keySet();
for (Iterator itr = keys.iterator(); itr.hasNext();) {
String oldKey = (String) itr.next();
Object oldValue = prop.get(oldKey);
toSaveMap.put(oldKey, oldValue);
}
toSaveMap.put(key,value);

prop.putAll(toSaveMap);
System.out.println(toSaveMap.toString());*/
prop.put(key, value);

    try  
    {  
        OutputStream outputStream = new FileOutputStream(new File(path));  
        prop.store(outputStream, null);
        outputStream.flush();
        outputStream.close();  
        System.out.println("修改成功");
    }   
    catch (IOException e)  
    {  
        e.printStackTrace();  
    }  

}
/**


方法: delProperties <br>
描述: 刪除 <br>
作者: 宋學軍 sxjworld@126.com<br>
時間: 2013-12-6 下午9:53:28
@param key
*/
public void delProperties(String key)
{

//將文件中key，value先拿出來
InputStream url = PropertiesUtil.class.getResourceAsStream("/conf/deploy.properties");
Properties prop = new Properties();
try {
prop.load(url);
} catch (IOException e) {
e.printStackTrace();
}
/*Map toSaveMap = new HashMap();
Set keys = prop.keySet();
for (Iterator itr = keys.iterator(); itr.hasNext();)
{
String oldKey = (String) itr.next();
Object oldValue = prop.get(oldKey);
toSaveMap.put(oldKey, oldValue);
}
prop.clear();
toSaveMap.remove(key);
prop.putAll(toSaveMap);*/
prop.remove(key);
//將所有鍵值對再寫入文件
        try

        {

            FileOutputStream outputStream = new FileOutputStream(PropertiesUtil.class.getResource("/conf/deploy.properties").getFile());

            prop.store(outputStream, null);
            outputStream.flush();
            outputStream.close();

            System.out.println("刪除成功");
        }

        catch (IOException e)

        {

            e.printStackTrace();

        }

}
public void delProperties(String path,String key)
{
//將文件中key，value先拿出來
InputStream url = null;
try {
url = new FileInputStream(path);
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Properties prop = new Properties();
try {
prop.load(url);
} catch (IOException e) {
e.printStackTrace();
}
/*Map toSaveMap = new HashMap();
Set keys = prop.keySet();
for (Iterator itr = keys.iterator(); itr.hasNext();)
{
String oldKey = (String) itr.next();
Object oldValue = prop.get(oldKey);
toSaveMap.put(oldKey, oldValue);
}
prop.clear();
toSaveMap.remove(key);
prop.putAll(toSaveMap);
System.out.println(toSaveMap.toString());*/
prop.remove(key);
//將所有鍵值對再寫入文件
        try

        {

            FileOutputStream outputStream = new FileOutputStream(path);

            prop.store(outputStream, null);
            outputStream.flush();
            outputStream.close();

            System.out.println("刪除成功");
        }

        catch (IOException e)

        {

            e.printStackTrace();

        }

}
} </pre>
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解析properties文件通用 java工具類

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